John k



UNITED sTaTEs PATENT oEEicE.

JOHN K. PETERS, OF NE\V YORK, N. Y.

SHIPS PROPELLER.

Specification of Letters Patent No. 23,112, dated March 1, 1859.

T o all whom it may concern:

Be it known that I, JOHN K. PETERS, of the city, county, and State of New York, have invented a new and Improved Propeller for Ships and other Vessels; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which,-

Figure l is a side view of a vessel having my propeller applied. Fig. 2 is a plan of the same.

Similar letters of reference indicate corresponding parts in both figures.

To enable others to make and use my invention, I will proceed to describe its construction and operation.

The drawing represents a form of my invention which is perhaps the simplest of any, and serves as well as any other to illustrate its nature and operation, and whose description will serve, with the aid of some additional remarks, to explain to persons skilled in the art the several modes in which it may be applied.

A, is a long arm attached atits front end to oscillate upon a fixed horizontal pivot a, secured to the outside of the vessel B, and having attached to its rear end a single blade or lioat C, such attachment being made by a hinge-joint Z, whose axis is parallel with the axis of the pivot (a. Above and below the joint there are stops c, (Z, to limit the swinging movement of the blade or float on the said joint.

D, is a steam-engine cylinder attached to the ouside of the vessel and having its pis* ton-rod e, connected by a rod or link j', with the arm A, at a suitable point between its center of motion a, and the propelling fioat or blade (l. Another propeller is supposed to be applied in a similar manner on the opposite side of the vessel.

The operation of this example of my invention is as follows The arm A, receives an upward and downward oscillating motion from the piston of the steam-engine and carries with it the float or blade C, which is always submerged and which in the downward movement of the arm is supported against the upper stop c, as shown in black outline in Fig. l, and in the upward movement thereof is supported against the lower stop (Z, as shown in red outline in the same ligure. The resistance of the water to the movement of the blade or float, as the direction of the movement of the arm is changed, thus causes -the blade or ioat to swing on Vthe 4joint b, from one stop to the other; one

Provision may be made in various ways for reversing the action of the propeller. In the mode of application represented in the drawing7 the arm A, would require to be thrown over toH the front of its `pivot or center a, and this would require a proper attachment of the engine to operate on it while in the other position. Other modes of applying and driving the propeller permit of more simple methods of reversing its action.

IVhen it is desired to attach more than one blade to the arm A, it will only be necessary to place a projecting arm or bar upon the arm A, the extremity of the bar being furnished with stops (c, CZ) and a blade fitted thereto as herein shown.

Having thus described my invention, I claim as new' and desire to secure by Letters Patent The arrangement and combination of stops (c, (l), arm A, and blade C, (more than one blade with the stops being combined with the arm A, when desired) all substantially as and for the purpose herein shown and described.

JOI-IN K. PETERS. lVitnesses WVM. TUscrI, HENRY T. BROWN. 

